Nano cuprous oxide and nano silver compounded sea anti-fouling paint

Abstract

The invention provides a nano cuprous oxide and nano silver compounded sea anti-fouling paint, the cuprous oxide is nanometer or sub nanometer scale, nano silver is synthesized by a chemical method, silver particle content is 6000ppm-24000ppm, the sea anti-fouling paint comprises the following raw materials by mass: 30%-50% of a drag reduction polymer, 20%-25% of toxic materials, 2%-5% of auxiliary materials, 0.1%-0.2% of an efficient anti-fouling agent, 5%-25% of a functional pigment, 10%-20% of a solvent, 1%-1.5% of a plasticizer, and 1%-1.5% of a thixotropic agent, the sea anti-fouling paint has a good performance for matching with an antirusting paint, is smooth and flat in coating film, good in drag reduction performance, uniform in erosion rate, energy saving and consumption reducing, and the sea anti-fouling paint is in medical micro toxic level, cause no harm to the sea environment, and can meet the requirements of environmental protection.

Description

Technical field [0001] The invention relates to coatings, in particular to a marine antifouling coating of nano cuprous oxide composite nano silver for ships. Background technique [0002] When ships and some underwater devices are operating in the ocean, there are many creatures in the ocean that will attach to the bottom of the ship and marine underwater facilities. These attached creatures are harmful to ships and marine underwater facilities. They significantly increase the mass of the hull (up to 20kg / m2), increase the navigation resistance, affect the ship's speed, and increase fuel consumption. According to reports, for every 10μm increase in the surface roughness of the bottom of the ship, fuel consumption will increase by 1%, and the attached organisms will accelerate the corrosion of the ship and increase the number of visits to the site; the attached organisms will also bring damage to marine facilities such as marine drilling platforms, seawater pipelines, and sonar ...

AI Technical Summary

Problems solved by technology

According to reports, in 2012, a domestic marine research institute cooperated with a Japanese institution to develop a sub-nanometer cuprous oxide marine antifouling coating project. However, the amount of cuprous oxide added is relatively large, and it needs to be added to more than 40% to have an obvious antifouling effect. , causing the water resistance and flexibility of the coating to be greatly reduced, and cuprous oxide is a slightly toxic grade. When it is added in a large amount, the impact on the marine environment is small, but it will also cause certain damage. A composite nano-oxidizer is developed. Cuprous antifouling coatings have great significance for high efficiency, long-term effect and environmental protection. Under this technical background, this project proposes a composite nano-cuprous oxide composite nano-silver antifouling coating, which can reduce antifouling and poisonous materials by 50 % dosage, nano-silver is prepared by chemical method, and it is a water-based sol, non-toxic and harmless, easy to add, safe and stable, the final coating film is smooth, with excellent physical properties and remarkable antifouling effect

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